Flight OddsUA643 LAS → SFO
United Airlines · Las Vegas, NV to San Francisco, CA · 169 flights observed, 2026-01-06 to 2026-06-30 · 414 mi
UA643 covers more than one route in the data window — the stats below are for LAS → SFO, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
98%
Median delay
-15 min
90th percentile
-4 min
Cancellation rate
1%
How often is UA643 on time?
Across 169 flights on LAS → SFO from 2026-01-06 to 2026-06-30, UA643 arrived within 15 minutes of schedule 98% of the time. The median arrival delay was -15 min, and the worst 10% of flights arrived -4 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 164 | 98% |
| 16-30 min | 2 | 1% |
| 31-60 min | 1 | 1% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 1 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 26 | 96% | -16 min |
| 2026-02 | 28 | 100% | -20 min |
| 2026-03 | 31 | 100% | -17 min |
| 2026-04 | 30 | 100% | -16 min |
| 2026-05 | 28 | 93% | -12 min |
| 2026-06 | 25 | 96% | +14 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 25 | 100% |
| Tue | 26 | 100% |
| Wed | 20 | 100% |
| Thu | 23 | 100% |
| Fri | 25 | 96% |
| Sat | 25 | 92% |
| Sun | 24 | 96% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…